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Update 1 (Version 12.1)

This service release was issued on September 9, 2025 to allow you to select the O86-24 design code for fire design only, in which case the program uses the new char rate for CLT and the new fire protection times for gypsum wallboard.  A bug introduced in version 12 affecting CLT char rates has also been corrected.

Refer to Sizer Features and Changes for more details.

See Also

Sizer 2025

Future Update 2